//*****************************************************************************
// Copyright 2017-2019 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//*****************************************************************************

#pragma once

#include "ngraph/node.hpp"
#include "ngraph/op/op.hpp"

namespace ngraph
{
    namespace op
    {
        /// \brief Range operation, analogous to `range()` in Python.
        class Range : public Op
        {
        public:
            NGRAPH_API
            static constexpr NodeTypeInfo type_info{"Range", 0};
            const NodeTypeInfo& get_type_info() const override { return type_info; }
            /// \brief Constructs an unitialized range operation.
            Range() = default;

            /// \brief Constructs a range operation.
            ///
            /// \param start The tensor producing the start value. Must be a scalar of integer
            ///              element type, and same element type as `stop` and `step`.
            /// \param stop The tensor producing the stop value. Must be a scalar of integer
            ///             element type, and same element type as `start` and `step`.
            /// \param step The tensor producing the step value. Must be a scalar of integer
            ///             element type, and same element type as `start` and `stop`.
            Range(const Output<Node>& start, const Output<Node>& stop, const Output<Node>& step);

            void validate_and_infer_types() override;

            virtual std::shared_ptr<Node>
                copy_with_new_args(const NodeVector& new_args) const override;
        };
    }
}
